Are you ready to maximize your property’s potential with an Accessory Dwelling Unit, (ADU)? Whether you call it a backyard cottage, in-law suite, garage conversion, or tiny home, ADUs are a flexible and increasingly popular way to expand your living space.
Think small means sacrificing style or comfort? Think again.
When it comes to ADUs, great design makes all the difference, especially when space is limited. The right floor plan can make a 400-square-foot studio feel surprisingly spacious, functional, and even luxurious.
In this guide, we’ll explore the best ADU floor plans that are specifically tailored for small spaces. You’ll find design ideas, space-saving tips, and real examples to help bring your small-space vision to life.
What to Consider When Choosing an ADU Floor Plan
Selecting the right ADU floor plan involves more than just aesthetics. To get the most out of your investment you’ll want to consider a few essential factors:
Local Zoning Laws and Building Codes
ADU regulations vary widely by location. Zoning laws and building codes determine what size, style, and placement are allowed on your property.
Pro tip: Always check with your local planning or zoning department before finalizing your plans to avoid costly delays or redesigns (or let us handle the permitting process for you).
Budget and Cost Considerations:
Smaller ADU floor plans are generally more cost-effective, but construction, permitting, and utility costs should also be factored in. Pre-designed plans, like those from Georgia ADU, can save time and money compared to custom designs.
Purpose and Lifestyle Needs
How you plan to use the ADU will shape the best layout for your needs.
- For rentals: Consider durability, easy maintenance, and privacy features like separate entrances.
- For family or guests: Prioritize comfort, accessibility, and livable features like larger bathrooms or open kitchens.
By weighing these key factors, you can choose an ADU floor plan that aligns with your goals, budget, and property constraints.
Pre-Designed ADU Floor Plans Perfect for You
Looking for the ideal ADU design that blends style, function, and space efficiency? Our collection of pre-designed floor plans was created specifically for that. Whether you’re building a cozy rental, a guest suite, or a private retreat, these thoughtfully crafted models offer something for every need and budget.
From compact studios to two-bedroom layouts, each plan is optimized for natural light, smart storage, and relaxed living.
Let’s take a closer look at our four most popular small-space ADU floor plans:
Studio ADU (400–600 sq ft)
Studio ADUs are the most compact option, and they combine living, sleeping, and kitchen areas into a single open space. These floor plans are ideal for single occupants, guests, or as a rental unit.
Our featured studio model:
- Azalea Model (400 sq ft): This charming studio maximizes space with a clever layout that includes a double-door closet and a dedicated laundry closet with a stackable washer and dryer. Brightened by multiple windows and a windowed front door, the Azalea also features a cozy covered porch and additional outdoor storage, making it budget- and space-friendly.
One-Bedroom ADU (500–800 sq ft)
One-bedroom ADUs strike the perfect balance between privacy and functionality, making them suitable for individuals, couples, or small families. These plans balance privacy and functionality, often featuring an open kitchen-living area and built-in storage.
Our one-bedroom models include:
- Dogwood Model (500 sq ft): A charming design with a spacious living, dining, and kitchen area filled with natural light from multiple windows. The private bedroom includes a large closet, and the front porch adds inviting outdoor living space.
- Peachtree Model (625 sq ft): A modern layout boasting high ceilings and an open floor plan that’s great for entertaining. The roomy bedroom includes a large closet and sliding glass door leading to a front patio, while the combined kitchen and living area offer comfort and style for long-term residents or renters.
Two-Bedroom ADU (750–1,200 sq ft)
Two-bedroom ADUs provide more space and flexibility, ideal for small families or as rental units.
These plans often include spacious common areas and multiple bathrooms to enhance privacy and convenience while maintaining an efficient layout.
Our standout two-bedroom model:
- Magnolia Model (750 sq ft): Featuring an expansive great room that blends living, dining, and kitchen spaces, the Magnolia offers two comfortable bedrooms, including a primary bedroom with a walk-in closet. The design includes a large bathroom and a laundry closet, combining style and practicality in a compact footprint.
| ADU Type | Size (sq ft) | Key Features | Best For |
| Studio ADU | 400–600 | Open layout, multifunctional furniture, large windows | Single occupants, guests |
| One-Bedroom ADU | 500–800 | Separate bedroom, open kitchen-living area, built-in storage | Couples, small families, renters |
| Two-Bedroom ADU | 750–1,200 | Two bedrooms, open layout, ample storage, shared bathroom | Families, rental units |
For additional information, explore our ADU Models.
While our pre-designed floor plans are a great starting point, most of our customers choose to customize their ADU to fit their specific lot. With Atlanta’s unique mix of sloped yards, tree coverage, and tight urban spaces, a one-size-fits-all approach doesn’t always work.
That’s why we tailor each design to make the most of your property. We’ve seen it all, and we’re ready to make your ADU a perfect fit from day one.
Key Features of Small Space ADU Floor Plans
Creating an efficient and livable ADU in a small space requires thoughtful design. Here are the critical features to look for in these types of ADU floor plans:
- Multifunctional Spaces: Combining areas like the kitchen, living room, and dining space into one open area can help save square footage while maintaining functionality. For example, a fold-down table can serve as both a dining and work surface.
- Efficient Storage: Built-in solutions, such as under-stair storage, wall-mounted cabinets, or multi-purpose furniture like Murphy beds, help keep the space organized and clutter-free.
- Natural Light: Large windows, skylights, or glass sliding doors help to maximize natural light, making small spaces feel larger and more inviting. This is especially effective in compact designs.
- Open Floor Plans: Minimizing the number of interior walls can create a better flow and a sense of spaciousness, even in ADUs as small as 400 square feet.
These features ensure that ADU floor plans for small spaces are both practical and aesthetically pleasing, providing a comfortable living environment.
Unlock the Potential of Your Small-Space
Designing the perfect ADU for a small space is all about smart choices, combining functionality, style, and efficient layouts to create a living area that feels spacious and welcoming. At Georgia ADU, we’re more than just a floor plan provider, we’re a local design firm dedicated to helping Georgia homeowners bring their ADU visions to life. Whether you’re using one of our pre-designed models or customizing it for your unique lot, we’re here to guide you through every step. From design and layout to permitting and zoning, we handle the heavy lifting so you don’t have to.
If you’re located in Georgia, we’d love to learn more about your project.Book a free discovery call and find out how easy building an ADU can be with the right team on your side.
